Adhesion promoter, electroactive layer and electroactive device comprising same, and method
a technology of adhesion promoter and an electroactive layer, applied in the direction of cell components, sustainable manufacturing/processing, final product manufacturing, etc., can solve the problems of adhesion between inorganic and organic layers in such devices, and the adhesion of titanium dioxide layer to plastic layer or light-emitting polymer layer to cathode metal layer often presents problems
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example 1
[0057] This example as illustrated in the embodiment of FIG. 1 demonstrates improvement in adhesion between two electroactive organic layers of an electroactive device by surface-treating at least one of the two layers with adhesion promoter. A hole-transporting layer (16) comprising PEDOT-PSS polymer (2.6% solids in water) was spin coated at 3000 rpm onto the anode substrate (18) and baked at 110° C. A surface treatment was applied to the PEDOT-PSS layer to improve adhesion to a subsequent layer. In particular, a solution comprising a 9,9-disubstituted fluorenyl compound of the formula (I), wherein x is zero, and both R1 and R2 are ethyl, (about 0.1% solids in p-xylene) was spin coated at a speed of 3000 rpm onto the surface of the PEDOT-PSS layer and the new anode composite and was baked at 110° C. A light emitting polymer (LEP) material (14) comprising American Dye Source 329 (ADS329) was spin coated onto the cathode substrate (12) and was baked at 110° C. The anode composite and...
example 2
[0058] This example as illustrated in the embodiment of FIG. 2 demonstrates improvement in adhesion between an electroactive organic layer and a metal layer of an electroactive device by surface-treating at least one of the two layers with adhesion promoter. A hole-transporting layer (16) comprising PEDOT-PSS polymer (2.6% solids in water) was spin coated at 3000 rpm onto the anode substrate (18) and baked at 110° C. A light emitting polymer (LEP) material (14) comprising American Dye Source 329 (ADS329) was spin coated onto the PEDOT-PSS surface of the anode composite and then the composite was baked again at 110° C. A surface treatment was applied to the cathode surface (12) to improve adhesion to a subsequent layer. In particular, a solution comprising a 9,9-disubstituted fluorenyl compound of the formula (I), wherein x is zero, and both R1 and R2 are ethyl, (about 0.1% solids in p-xylene) was spin coated at a speed of 3000 rpm onto the aluminum surface of the cathode and the new...
example 3
[0059] This example demonstrates improvement in adhesion between an electroactive organic layer and a metal layer of an electroactive device by surface-treating at least one of the two layers with adhesion promoter. A surface treatment is applied to a cathode surface to improve adhesion to a subsequent layer. Four different adhesion promoters are examined: (1) a commercially available primer (type SS4155, available from GE Silicones) comprising about 5-10 wt. % titanium tetrabutoxide and about 10-30 wt. % tetraethyl orthosilicate (about 7% solids level in aliphatic hydrocarbon solvent) diluted with isopropanol (1 part SS4155 to 10 parts isopropanol); (2) 17 milligrams (mg) 1:1 titanium tetrapropoxide / tetraethyl orthosilicate in 100 milliliters (ml) isopropanol; (3) 1 part SS4155 diluted with 100 parts isopropanol; and (4) 100 mg 1:1 titanium tetrapropoxide / tetraethyl orthosilicate in 100 ml isopropanol. In separate experiments each adhesion promoter solution is spin coated at a sp...
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Abstract
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